Mimitchi

Well know they have added the new feature that when it runs out of batteries you can put in the new one and it still has your pet that the batteries ran out on!!! (No more early life expectences for the world of tama!)

Mothra

How long do the batteries usually last on Tamagotchis considering you can never turn them off?

I've had my TamaPlus since the end of March and had it on ever since. I tabbed it up for about a week once. It's still on and going very well.It's got the nice CR2032 battery. It's a 3V that has a long life. I'm not worried.